Module:Citation/CS1/Date validation: Difference between revisions

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--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
]]
local add_prop_cat, is_set, in_array, set_message, substitute, wrap_style; -- imported functions from selected Module:Citation/CS1/Utilities
local cfg; -- table of tables imported from selected Module:Citation/CS1/Configuration


local p = {}


--[[--------------------------< F I L E - S C O P E  D E C L A R A T I O N S >--------------------------------
File-scope variables are declared here


--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
]]
]]


local is_set, in_array; -- imported functions from selected Module:Citation/CS1/Utilities
local lang_object = mw.getContentLanguage(); -- used by is_valid_accessdate(), is_valid_year(), date_name_xlate(); TODO: move to ~/Configuration?
local cfg; -- table of tables imported from slected Module:Citation/CS1/Configuration
local year_limit; -- used by is_valid_year()
 


--[=[-------------------------< I S _ V A L I D _ A C C E S S D A T E >----------------------------------------
--[=[-------------------------< I S _ V A L I D _ A C C E S S D A T E >----------------------------------------
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Wikipedia start date is 2001-01-15T00:00:00 UTC which is 979516800 seconds after 1970-01-01T00:00:00 UTC (the start of Unix time)
Wikipedia start date is 2001-01-15T00:00:00 UTC which is 979516800 seconds after 1970-01-01T00:00:00 UTC (the start of Unix time)
accessdate is the date provided in |accessdate= at time 00:00:00 UTC
accessdate is the date provided in |access-date= at time 00:00:00 UTC
today is the current date at time 00:00:00 UTC plus 48 hours
today is the current date at time 00:00:00 UTC plus 48 hours
if today is 2015-01-01T00:00:00 then
if today is 2015-01-01T00:00:00 then
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This function does not work if it is fed month names for languages other than English.  Wikimedia #time: parser
This function does not work if it is fed month names for languages other than English.  Wikimedia #time: parser
apparently doesn't understand non-Engish date month names. This function will always return false when the date
apparently doesn't understand non-English date month names. This function will always return false when the date
contains a non-English month name because good1 is false after the call to lang.formatDate().  To get around that
contains a non-English month name because good1 is false after the call to lang.formatDate().  To get around that
call this function with YYYY-MM-DD format dates.
call this function with YYYY-MM-DD format dates.
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local function is_valid_accessdate (accessdate)
local function is_valid_accessdate (accessdate)
local lang = mw.getContentLanguage();
local good1, good2;
local good1, good2;
local access_ts, tomorrow_ts; -- to hold unix time stamps representing the dates
local access_ts, tomorrow_ts; -- to hold Unix time stamps representing the dates
 
good1, access_ts = pcall( lang.formatDate, lang, 'U', accessdate ); -- convert accessdate value to unix timesatmp
good1, access_ts = pcall (lang_object.formatDate, lang_object, 'U', accessdate ); -- convert accessdate value to Unix timestamp
good2, tomorrow_ts = pcall( lang.formatDate, lang, 'U', 'today + 2 days' ); -- today midnight + 2 days is one second more than all day tomorrow
good2, tomorrow_ts = pcall (lang_object.formatDate, lang_object, 'U', 'today + 2 days' ); -- today midnight + 2 days is one second more than all day tomorrow
if good1 and good2 then -- lang.formatDate() returns a timestamp in the local script which which tonumber() may not understand
if good1 and good2 then -- lang.formatDate() returns a timestamp in the local script which which tonumber() may not understand
access_ts = tonumber (access_ts) or lang:parseFormattedNumber (access_ts); -- convert to numbers for the comparison;
access_ts = tonumber (access_ts) or lang_object:parseFormattedNumber (access_ts); -- convert to numbers for the comparison;
tomorrow_ts = tonumber (tomorrow_ts) or lang:parseFormattedNumber (tomorrow_ts);
tomorrow_ts = tonumber (tomorrow_ts) or lang_object:parseFormattedNumber (tomorrow_ts);
else
else
return false; -- one or both failed to convert to unix time stamp
return false; -- one or both failed to convert to Unix time stamp
end
end


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--[[--------------------------< G E T _ M O N T H _ N U M B E R >----------------------------------------------
--[[--------------------------< G E T _ M O N T H _ N U M B E R >----------------------------------------------


returns a number according to the month in a date: 1 for January, etc.  Capitalization and spelling must be correct. If not a valid month, returns 0
returns a number according to the month in a date: 1 for January, etc.  Capitalization and spelling must be correct.
If not a valid month, returns 0


]]
]]


local function get_month_number (month)
local function get_month_number (month)
return cfg.date_names['local'].long[month] or cfg.date_names['local'].short[month] or -- look for local names first
return cfg.date_names['local'].long[month] or cfg.date_names['local'].short[month] or -- look for local names first
cfg.date_names['en'].long[month] or cfg.date_names['en'].short[month] or -- failing that, look for English names
cfg.date_names['en'].long[month] or cfg.date_names['en'].short[month] or -- failing that, look for English names
0; -- not a recognized month name
0; -- not a recognized month name
end
end




--[[--------------------------< I S _ V A L I D _ E M B A R G O _ D A T E >------------------------------------
--[[--------------------------< G E T _ S E A S O N _ N U M B E R >--------------------------------------------
 
returns a number according to the sequence of seasons in a year: 21 for Spring, etc.  Capitalization and spelling
must be correct. If not a valid season, returns 0.
21-24 = Spring, Summer, Autumn, Winter, independent of “Hemisphere”
 
returns 0 when <param> is not |date=


returns true and date value if that value has proper dmy, mdy, ymd format.
Season numbering is defined by Extended Date/Time Format (EDTF) specification (https://www.loc.gov/standards/datetime/)
which became part of ISO 8601 in 2019.  See '§Sub-year groupings'.  The standard defines various divisions using
numbers 21-41.  cs1|2 only supports generic seasons.  EDTF does support the distinction between north and south
hemisphere seasons but cs1|2 has no way to make that distinction.


returns false and 9999 (embargoed forever) when date value is not proper format; assumes that when |embargo= is
These additional divisions not currently supported:
set, the editor intended to embargo a pmc but |embargo= does not hold a single date.
25-28 = Spring - Northern Hemisphere, Summer- Northern Hemisphere, Autumn - Northern Hemisphere, Winter - Northern Hemisphere
29-32 = Spring – Southern Hemisphere, Summer– Southern Hemisphere, Autumn – Southern Hemisphere, Winter - Southern Hemisphere
33-36 = Quarter 1, Quarter 2, Quarter 3, Quarter 4 (3 months each)
37-39 = Quadrimester 1, Quadrimester 2, Quadrimester 3 (4 months each)
40-41 = Semestral 1, Semestral-2 (6 months each)


]]
]]


local function is_valid_embargo_date (v)
local function get_season_number (season, param)
if v:match ('^%d%d%d%d%-%d%d%-%d%d$') or -- ymd
if 'date' ~= param then
v:match ('^%d%d?%s+%a+%s+%d%d%d%d$') or -- dmy
return 0; -- season dates only supported by |date=
v:match ('^%a+%s+%d%d?%s*,%s*%d%d%d%d$') then -- mdy
return true, v;
end
end
return false, '9999'; -- if here not good date so return false and set embargo date to long time in future
return cfg.date_names['local'].season[season] or -- look for local names first
cfg.date_names['en'].season[season] or -- failing that, look for English names
0; -- not a recognized season name
end
end




--[[--------------------------< G E T _ S E A S O N _ N U M B E R >--------------------------------------------
--[[--------------------------< G E T _ Q U A R T E R _ N U M B E R >------------------------------------------
 
returns a number according to the sequence of quarters in a year: 33 for first quarter, etc.  Capitalization and spelling
must be correct. If not a valid quarter, returns 0.
33-36 = Quarter 1, Quarter 2, Quarter 3, Quarter 4 (3 months each)


returns a number according to the sequence of seasons in a year: 1 for Winter, etc.  Capitalization and spelling must be correct. If not a valid season, returns 0
returns 0 when <param> is not |date=


Uses ISO DIS 8601 2016 part 2 §4.7 Divisions of a year for hemishpere-independent seasons:
Quarter numbering is defined by Extended Date/Time Format (EDTF) specification (https://www.loc.gov/standards/datetime/)
21-24 = Spring, Summer, Autumn, Winter, independent of “Hemisphere”
which became part of ISO 8601 in 2019See '§Sub-year groupings'.  The standard defines various divisions using
numbers 21-41.  cs1|2 only supports generic seasons and quarters.


These additional divisions not currently supported:
These additional divisions not currently supported:
25-28 = Spring - Northern Hemisphere, Summer- Northern Hemisphere, Autumn - Northern Hemisphere, Winter - Northern Hemisphere
29-32 = Spring – Southern Hemisphere, Summer– Southern Hemisphere, Autumn – Southern Hemisphere, Winter - Southern Hemisphere
33-36 = Quarter 1, Quarter 2, Quarter 3, Quarter 4 (3 months each)
37-39 = Quadrimester 1, Quadrimester 2, Quadrimester 3 (4 months each)
37-39 = Quadrimester 1, Quadrimester 2, Quadrimester 3 (4 months each)
40-41 = Semestral 1, Semestral-2 (6 months each)
40-41 = Semestral 1, Semestral-2 (6 months each)


]]
]]


local function get_season_number (season)
local function get_quarter_number (quarter, param)
return cfg.date_names['local'].season[season] or -- look for local names first
if 'date' ~= param then
cfg.date_names['en'].season[season] or -- failing that, look for English names
return 0; -- quarter dates only supported by |date=
0; -- not a recognized season name
end
quarter = mw.ustring.gsub (quarter, ' +', ' '); -- special case replace multiple space chars with a single space char
return cfg.date_names['local'].quarter[quarter] or -- look for local names first
cfg.date_names['en'].quarter[quarter] or -- failing that, look for English names
0; -- not a recognized quarter name
end
end


--[[--------------------------< I S _ P R O P E R _ N A M E >--------------------------------------------------


returns a non-zero number if date contains a recognized proper name.  Capitalization and spelling must be correct.
--[[--------------------------< G E T _ P R O P E R _ N A M E _ N U M B E R >----------------------------------
 
returns a non-zero number if date contains a recognized proper-name.  Capitalization and spelling must be correct.
 
returns 0 when <param> is not |date=


]]
]]


local function is_proper_name (name)
local function get_proper_name_number (name, param)
if 'date' ~= param then
return 0; -- proper-name dates only supported by |date=
end
return cfg.date_names['local'].named[name] or -- look for local names dates first
return cfg.date_names['local'].named[name] or -- look for local names dates first
cfg.date_names['en'].named[name] or -- failing that, look for English names
cfg.date_names['en'].named[name] or -- failing that, look for English names
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end
end


--[[--------------------------< I S _ V A L I D _ M O N T H _ O R _ S E A S O N >------------------------------


--returns true if month or season is valid (properly spelled, capitalized, abbreviated)
--[[--------------------------< G E T _ E L E M E N T _ N U M B E R <------------------------------------------
 
returns true if month or season or quarter or proper name is valid (properly spelled, capitalized, abbreviated)


]]
]]


local function is_valid_month_or_season (month_season)
local function get_element_number (element, param)
if 0 == get_month_number (month_season) then -- if month text isn't one of the twelve months, might be a season
local num;
if 0 == get_season_number (month_season) then -- not a month, is it a season?
return false; -- return false not a month or one of the five seasons
local funcs = {get_month_number, get_season_number, get_quarter_number, get_proper_name_number}; -- list of functions to execute in order
for _, func in ipairs (funcs) do -- spin through the function list
num = func (element, param); -- call the function and get the returned number
if 0 ~= num then -- non-zero when valid month season quarter
return num; -- return that number
end
end
end
end
return true;
return nil; -- not valid
end
end


--[[--------------------------< I S _ V A L I D _ Y E A R >----------------------------------------------------
--[[--------------------------< I S _ V A L I D _ Y E A R >----------------------------------------------------


Function gets current year from the server and compares it to year from a citation parameter.  Years more than one year in the future are not acceptable.
Function gets current year from the server and compares it to year from a citation parameter.  Years more than one
year in the future are not acceptable.
 
Special case for |pmc-embargo-date=: years more than two years in the future are not acceptable


]]
]]
local year_limit;
 
local function is_valid_year(year)
local function is_valid_year (year, param)
if not is_set(year_limit) then
if not is_set (year_limit) then
year_limit = tonumber(os.date("%Y"))+1; -- global variable so we only have to fetch it once
year_limit = tonumber(os.date("%Y"))+1; -- global variable so we only have to fetch it once
end
 
year = tonumber (year) or lang_object:parseFormattedNumber (year); -- convert to number for the comparison
if year and (100 > year) then -- years less than 100 not supported
return false;
end
end
return tonumber(year) <= year_limit; -- false if year is in the future more than one year
if 'pmc-embargo-date' == param then -- special case for |pmc-embargo-date=
return year and (year <= tonumber(os.date("%Y"))+2) or false; -- years more than two years in the future are not accepted
end
return year and (year <= year_limit) or false;
end
end


--[[--------------------------< I S _ V A L I D _ D A T E >----------------------------------------------------
--[[--------------------------< I S _ V A L I D _ D A T E >----------------------------------------------------
Returns true if day is less than or equal to the number of days in month and year is no farther into the future
Returns true if day is less than or equal to the number of days in month and year is no farther into the future
than next year; else returns false.
than next year; else returns false.
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]]
]]


local function is_valid_date (year, month, day)
local function is_valid_date (year, month, day, param)
local days_in_month = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
local days_in_month = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
local month_length;
local month_length;
if not is_valid_year(year) then -- no farther into the future than next year
if not is_valid_year (year, param) then -- no farther into the future than next year except |pmc-embargo-date= no more than two years in the future
return false;
return false;
end
end
month = tonumber(month); -- required for YYYY-MM-DD dates
month = tonumber (month); -- required for YYYY-MM-DD dates
if (2==month) then -- if February
if (2 == month) then -- if February
month_length = 28; -- then 28 days unless
month_length = 28; -- then 28 days unless
if 1582 > tonumber(year) then -- Julian calendar
if 1582 > tonumber(year) then -- Julian calendar
if 0==(year%4) then
if 0 == (year%4) then -- is a leap year?
month_length = 29;
month_length = 29; -- if leap year then 29 days in February
end
end
else -- Gregorian calendar
else -- Gregorian calendar
if (0==(year%4) and (0~=(year%100) or 0==(year%400))) then -- is a leap year?
if (0 == (year%4) and (0 ~= (year%100) or 0 == (year%400))) then -- is a leap year?
month_length = 29; -- if leap year then 29 days in February
month_length = 29; -- if leap year then 29 days in February
end
end
end
end
else
else
month_length=days_in_month[month];
month_length = days_in_month[month];
end
end


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return true;
return true;
end
end


--[[--------------------------< I S _ V A L I D _ M O N T H _ R A N G E _ S T Y L E >--------------------------
--[[--------------------------< I S _ V A L I D _ M O N T H _ R A N G E _ S T Y L E >--------------------------


Months in a range are expected to have the same style: Jan–Mar or October–December but not February–Mar or Jul–August.  
Months in a range are expected to have the same style: Jan–Mar or October–December but not February–Mar or Jul–August.  
There is a special test for May because it can be either short or long form.
This function looks in cfg.date_names{} to see if both month names are listed in the long subtable or both are
 
listed in the short subtable. When both have the same style (both are listed in the same table), returns true; false else
Returns true when style for both months is the same


]]
]]


local function is_valid_month_range_style (month1, month2)
local function is_valid_month_range_style (month1, month2)
local len1 = month1:len();
if (cfg.date_names.en.long[month1] and cfg.date_names.en.long[month2]) or -- are both English names listed in the long subtable?
local len2 = month2:len();
(cfg.date_names.en.short[month1] and cfg.date_names.en.short[month2]) or -- are both English names listed in the short subtable?
if len1 == len2 then
(cfg.date_names['local'].long[month1] and cfg.date_names['local'].long[month2]) or -- are both local names listed in the long subtable?
return true; -- both months are short form so return true
(cfg.date_names['local'].short[month1] and cfg.date_names['local'].short[month2]) then -- are both local names listed in the short subtable?
elseif 'May' == month1 or 'May'== month2 then
return true;
return true; -- both months are long form so return true
elseif 3 == len1 or 3 == len2 then
return false; -- months are mixed form so return false
else
return true; -- both months are long form so return true
end
end
return false; -- names are mixed
end
end


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Month pairs are expected to be left to right, earliest to latest in time.
Month pairs are expected to be left to right, earliest to latest in time.


All season ranges are accepted as valid because there are publishers out there who have published a Summer–Spring YYYY issue so ... ok
All season ranges are accepted as valid because there are publishers out there who have published a Summer–Spring YYYY issue, hence treat as ok


]]
]]


local function is_valid_month_season_range(range_start, range_end)
local function is_valid_month_season_range(range_start, range_end, param)
local range_start_number = get_month_number (range_start);
local range_start_number = get_month_number (range_start);
local range_end_number;
local range_end_number;
 
if 0 == range_start_number then -- is this a month range?
if 0 == range_start_number then -- is this a month range?
range_start_number = get_season_number (range_start); -- not a month; is it a season? get start season number
range_start_number = get_season_number (range_start, param); -- not a month; is it a season? get start season number
range_end_number = get_season_number (range_end); -- get end season number
range_end_number = get_season_number (range_end, param); -- get end season number


if (0 ~= range_start_number) and (0 ~= range_end_number) then
if (0 ~= range_start_number) and (0 ~= range_end_number) and (range_start_number ~= range_end_number) then
return true; -- any season pairing is accepted
return true; -- any season pairing is accepted except when both are the same
end
end
return false; -- range_start and/or range_end is not a season
return false; -- range_start and/or range_end is not a season
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-- here when range_start is a month
-- here when range_start is a month
range_end_number = get_month_number (range_end); -- get end month number
range_end_number = get_month_number (range_end); -- get end month number
if range_start_number < range_end_number then -- range_start is a month; does range_start precede range_end?
if range_start_number < range_end_number and -- range_start is a month; does range_start precede range_end?
if is_valid_month_range_style (range_start, range_end) then -- do months have the same style?
is_valid_month_range_style (range_start, range_end) then -- do months have the same style?
return true; -- proper order and same style
return true; -- proper order and same style
end
end
end
return false; -- range_start month number is greater than or equal to range end number; or range end isn't a month
return false; -- range_start month number is greater than or equal to range end number; or range end isn't a month
Line 267: Line 314:
the output table receives:
the output table receives:
rftdate: an IS8601 formatted date
rftdate: an ISO 8601 formatted date
rftchron: a free-form version of the date, usually without year which is in rftdate (season ranges and propername dates)
rftchron: a free-form version of the date, usually without year which is in rftdate (season ranges and proper-name dates)
rftssn: one of four season keywords: winter, spring, summer, fall (lowercase)
rftssn: one of four season keywords: winter, spring, summer, fall (lowercase)
rftquarter: one of four values: 1, 2, 3, 4


]]
]]
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local date; -- one date or first date in a range
local date; -- one date or first date in a range
local date2 = ''; -- end of range date
local date2 = ''; -- end of range date
input.year = tonumber (input.year) or lang_object:parseFormattedNumber (input.year); -- language-aware tonumber()
input.year2 = tonumber (input.year2) or lang_object:parseFormattedNumber (input.year2); -- COinS dates are pseudo-ISO 8601 so convert to Arabic numerals
-- start temporary Julian / Gregorian calendar uncertainty detection
-- start temporary Julian / Gregorian calendar uncertainty detection
local year = tonumber(input.year); -- this temporary code to determine the extent of sources dated to the Julian/Gregorian
local year = input.year; -- this temporary code to determine the extent of sources dated to the Julian/Gregorian
local month = tonumber(input.month); -- interstice 1 October 1582 – 1 January 1926
local month = tonumber(input.month); -- interstice 1 October 1582 – 1 January 1926
local day = tonumber (input.day);
local day = tonumber (input.day);
if (0 ~= day) and -- day must have a value for this to be a whole date
if (0 ~= day) and -- day must have a value for this to be a whole date
(((1582 == year) and (10 <= month) and (12 >= month)) or -- any whole 1582 date from 1 october to 31 December or
(((1582 == year) and (10 <= month) and (12 >= month)) or -- any whole 1582 date from 1 October to 31 December or
((1926 == year) and (1 == month) and (1 == input.day)) or -- 1 January 1926 or
((1926 == year) and (1 == month) and (1 == input.day)) or -- 1 January 1926 or
((1582 < year) and (1925 >= year))) then -- any date 1 January 1583 – 31 December 1925
((1582 < year) and (1925 >= year))) then -- any date 1 January 1583 – 31 December 1925
tCOinS_date.inter_cal_cat = true; -- set category flag true
tCOinS_date.inter_cal_cat = true; -- set category flag true
end
end
-- end temporary Julian / Gergorian calendar uncertainty detection
-- end temporary Julian / Gregorian calendar uncertainty detection
if ((1582 == year) and (10 > month)) or (1582 > year) then -- if a Julian calendar date
if 1582 > tonumber(input.year) or 20 < tonumber(input.month) then -- Julian calendar or season so &rft.date gets year only
tCOinS_date.rftdate = tostring (input.year); -- &rft.date gets year only
date = input.year;
return; -- done
end
-- here for all forms of Gregorian dates
if 20 < tonumber (input.month) then -- if season, quarter, or proper-name date
date = input.year; -- &rft.date gets year only
if 0 ~= input.year2 and input.year ~= input.year2 then -- if a range, only the second year portion when not the same as range start year
if 0 ~= input.year2 and input.year ~= input.year2 then -- if a range, only the second year portion when not the same as range start year
date = string.format ('%.4d/%.4d', tonumber(input.year), tonumber(input.year2)) -- assemble the date range
date = string.format ('%.4d/%.4d', input.year, input.year2) -- assemble the date range
end
end
if 20 < tonumber(input.month) then -- if season or propername date
 
local season = {[24]='winter', [21]='spring', [22]='summer', [23]='fall', [99]='Christmas'}; -- seasons lowercase, no autumn; proper names use title case
local season = {[24] = 'winter', [21] = 'spring', [22] = 'summer', [23] = 'fall', [33] = '1', [34] = '2', [35] = '3', [36] = '4', [98] = 'Easter', [99] = 'Christmas'}; -- seasons lowercase, no autumn; proper-names use title case
if 0 == input.month2 then -- single season date
if 0 == input.month2 then -- single season, quarter, or proper-name date
if 30 <tonumber(input.month) then
if 40 < tonumber(input.month) then
tCOinS_date.rftchron = season[input.month]; -- proper name dates
tCOinS_date.rftchron = season[input.month]; -- proper-name date; used in journal metadata only
else
elseif 30 < tonumber(input.month) then
tCOinS_date.rftssn = season[input.month]; -- seasons
tCOinS_date.rftquarter = season[input.month]; -- quarter date; used in journal metadata only
end
else
else -- season range with a second season specified
tCOinS_date.rftssn = season[input.month]; -- season date; used in journal metadata only
if input.year ~= input.year2 then -- season year – season year range or season year–year
end
tCOinS_date.rftssn = season[input.month]; -- start of range season; keep this?
else -- season ranges are lumped into &rft.chron; &rft.ssn and &rft.quarter are left blank
if 0~= input.month2 then
if input.year ~= input.year2 then -- season year – season year range or season year–year
tCOinS_date.rftchron = string.format ('%s %s – %s %s', season[input.month], input.year, season[input.month2], input.year2);
if 0 ~= input.month2 then
end
tCOinS_date.rftchron = string.format ('%s %s – %s %s', season[input.month], input.year, season[input.month2], input.year2); -- used in journal metadata only
else -- season–season year range
tCOinS_date.rftssn = season[input.month]; -- start of range season; keep this?
tCOinS_date.rftchron = season[input.month] .. '–' .. season[input.month2]; -- season–season year range
end
end
else -- season–season year range
tCOinS_date.rftchron = season[input.month] .. '–' .. season[input.month2]; -- season–season year range; used in journal metadata only
end
end
end
end
tCOinS_date.rftdate = date;
 
tCOinS_date.rftdate = tostring (date);
return; -- done
return; -- done
end
end
-- here for gregorian calendar dates
if 0 ~= input.day then
if 0 ~= input.day then
date = string.format ('%s-%.2d-%.2d', input.year, tonumber(input.month), tonumber(input.day)); -- whole date
date = string.format ('%s-%.2d-%.2d', input.year, tonumber(input.month), tonumber(input.day)); -- whole date
Line 337: Line 392:
tCOinS_date.rftdate = date .. date2; -- date2 has the '/' separator
tCOinS_date.rftdate = date .. date2; -- date2 has the '/' separator
return;
return;
end
--[[--------------------------< P A T T E R N S >--------------------------------------------------------------
this is the list of patterns for date formats that this module recognizes.  Approximately the first half of these
patterns represent formats that might be reformatted into another format.  Those that might be reformatted have
'indicator' letters that identify the content of the matching capture: 'd' (day), 'm' (month), 'a' (anchor year),
'y' (year); second day, month, year have a '2' suffix.
These patterns are used for both date validation and for reformatting.  This table should not be moved to ~/Configuration
because changes to this table require changes to check_date() and to reformatter() and reformat_date()
]]
local patterns = {
-- year-initial numerical year-month-day
['ymd'] = {'^(%d%d%d%d)%-(%d%d)%-(%d%d)$', 'y', 'm', 'd'},
-- month-initial: month day, year
['Mdy'] = {'^(%D-) +([1-9]%d?), +((%d%d%d%d?)%a?)$', 'm', 'd', 'a', 'y'},
-- month-initial day range: month day–day, year; days are separated by endash
['Md-dy'] = {'^(%D-) +([1-9]%d?)[%-–]([1-9]%d?), +((%d%d%d%d)%a?)$', 'm', 'd', 'd2', 'a', 'y'},
-- day-initial: day month year
['dMy'] = {'^([1-9]%d?) +(%D-) +((%d%d%d%d?)%a?)$', 'd', 'm', 'a', 'y'},
-- year-initial: year month day; day: 1 or 2 two digits, leading zero allowed; not supported at en.wiki
-- ['yMd'] = {'^((%d%d%d%d?)%a?) +(%D-) +(%d%d?)$', 'a', 'y', 'm', 'd'},
-- day-range-initial: day–day month year; days are separated by endash
['d-dMy'] = {'^([1-9]%d?)[%-–]([1-9]%d?) +(%D-) +((%d%d%d%d)%a?)$', 'd', 'd2', 'm', 'a', 'y'},
-- day initial month-day-range: day month - day month year; uses spaced endash
['dM-dMy'] = {'^([1-9]%d?) +(%D-) +[%-–] +([1-9]%d?) +(%D-) +((%d%d%d%d)%a?)$', 'd', 'm', 'd2', 'm2', 'a', 'y'},
-- month initial month-day-range: month day – month day, year;  uses spaced endash
['Md-Mdy'] = {'^(%D-) +([1-9]%d?) +[%-–] +(%D-) +([1-9]%d?), +((%d%d%d%d)%a?)$','m', 'd', 'm2', 'd2', 'a', 'y'},
-- day initial month-day-year-range: day month year - day month year; uses spaced endash
['dMy-dMy'] = {'^([1-9]%d?) +(%D-) +(%d%d%d%d) +[%-–] +([1-9]%d?) +(%D-) +((%d%d%d%d)%a?)$', 'd', 'm', 'y', 'd2', 'm2', 'a', 'y2'},
-- month initial month-day-year-range: month day, year – month day, year;  uses spaced endash
['Mdy-Mdy'] = {'^(%D-) +([1-9]%d?), +(%d%d%d%d) +[%-–] +(%D-) +([1-9]%d?), +((%d%d%d%d)%a?)$', 'm', 'd', 'y', 'm2', 'd2', 'a', 'y2'},
-- these date formats cannot be converted, per se, but month name can be rendered short or long
-- month/season year - month/season year; separated by spaced endash
['My-My'] = {'^(%D-) +(%d%d%d%d) +[%-–] +(%D-) +((%d%d%d%d)%a?)$', 'm', 'y', 'm2', 'a', 'y2'},
-- month/season range year; months separated by endash
['M-My'] = {'^(%D-)[%-–](%D-) +((%d%d%d%d)%a?)$', 'm', 'm2', 'a', 'y'},
-- month/season year or proper-name year; quarter year when First Quarter YYYY etc.
['My'] = {'^([^%d–]-) +((%d%d%d%d)%a?)$', 'm', 'a', 'y'}, -- this way because endash is a member of %D; %D- will match January–March 2019 when it shouldn't
-- these date formats cannot be converted
['Sy4-y2'] = {'^(%D-) +((%d%d)%d%d)[%-–]((%d%d)%a?)$'}, -- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
['Sy-y'] = {'^(%D-) +(%d%d%d%d)[%-–]((%d%d%d%d)%a?)$'}, -- special case Winter/Summer year-year; year separated with unspaced endash
['y-y'] = {'^(%d%d%d%d?)[%-–]((%d%d%d%d?)%a?)$'}, -- year range: YYY-YYY or YYY-YYYY or YYYY–YYYY; separated by unspaced endash; 100-9999
['y4-y2'] = {'^((%d%d)%d%d)[%-–]((%d%d)%a?)$'}, -- year range: YYYY–YY; separated by unspaced endash
['y'] = {'^((%d%d%d%d?)%a?)$'}, -- year; here accept either YYY or YYYY
}
--[[--------------------------< I S _ V A L I D _ E M B A R G O _ D A T E >------------------------------------
returns true and date value if that value has proper dmy, mdy, ymd format.
returns false and 9999 (embargoed forever) when date value is not proper format; assumes that when |pmc-embargo-date= is
set, the editor intended to embargo a PMC but |pmc-embargo-date= does not hold a single date.
]]
local function is_valid_embargo_date (v)
if v:match (patterns['ymd'][1]) or -- ymd
v:match (patterns['Mdy'][1]) or -- dmy
v:match (patterns['dMy'][1]) then -- mdy
return true, v;
end
return false, '9999'; -- if here not good date so return false and set embargo date to long time in future
end
end


Line 348: Line 473:


If the date fails the format tests, this function returns false and does not return values for anchor_year and
If the date fails the format tests, this function returns false and does not return values for anchor_year and
COinS_date.  When this happens, the date parameter is used in the COinS metadata and the CITEREF identifier gets
COinS_date.  When this happens, the date parameter is (DEBUG: not?) used in the COinS metadata and the CITEREF identifier gets
its year from the year parameter if present otherwise CITEREF does not get a date value.
its year from the year parameter if present otherwise CITEREF does not get a date value.


Inputs:
Inputs:
date_string - date string from date-holding parameters (date, year, accessdate, embargo, archivedate, etc.)
date_string - date string from date-holding parameters (date, year, publication-date, access-date, pmc-embargo-date, archive-date, lay-date)


Returns:
Returns:
Line 362: Line 487:
]]
]]


local function check_date (date_string, tCOinS_date, test_accessdate)
local function check_date (date_string, param, tCOinS_date)
local year; -- assume that year2, months, and days are not used;
local year; -- assume that year2, months, and days are not used;
local year2=0; -- second year in a year range
local year2 = 0; -- second year in a year range
local month=0;
local month = 0;
local month2=0; -- second month in a month range
local month2 = 0; -- second month in a month range
local day=0;
local day = 0;
local day2=0; -- second day in a day range
local day2 = 0; -- second day in a day range
local anchor_year;
local anchor_year;
local coins_date;
local coins_date;


if date_string:match("^%d%d%d%d%-%d%d%-%d%d$") then -- year-initial numerical year month day format
if date_string:match (patterns['ymd'][1]) then -- year-initial numerical year month day format
year, month, day=string.match(date_string, "(%d%d%d%d)%-(%d%d)%-(%d%d)");
year, month, day = date_string:match (patterns['ymd'][1]);
if 12 < tonumber(month) or 1 > tonumber(month) or 1582 > tonumber(year) or 0 == tonumber(day) then return false; end -- month or day number not valid or not Gregorian calendar
if 12 < tonumber(month) or 1 > tonumber(month) or 1582 > tonumber(year) or 0 == tonumber(day) then return false; end -- month or day number not valid or not Gregorian calendar
anchor_year = year;
anchor_year = year;
elseif mw.ustring.match(date_string, "^%D- +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month-initial: month day, year
month, day, anchor_year, year=mw.ustring.match(date_string, "(%D-) +(%d%d?),%s*((%d%d%d%d?)%a?)");
elseif mw.ustring.match(date_string, patterns['Mdy'][1]) then -- month-initial: month day, year
month, day, anchor_year, year = mw.ustring.match(date_string, patterns['Mdy'][1]);
month = get_month_number (month);
month = get_month_number (month);
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
elseif mw.ustring.match(date_string, "^%D- +[1-9]%d?[%-–][1-9]%d?, +[1-9]%d%d%d%a?$") then -- month-initial day range: month day–day, year; days are separated by endash
elseif mw.ustring.match(date_string, patterns['Md-dy'][1]) then -- month-initial day range: month day–day, year; days are separated by endash
month, day, day2, anchor_year, year=mw.ustring.match(date_string, "(%D-) +(%d%d?)[%-–](%d%d?), +((%d%d%d%d)%a?)");
month, day, day2, anchor_year, year = mw.ustring.match(date_string, patterns['Md-dy'][1]);
if tonumber(day) >= tonumber(day2) then return false; end -- date range order is left to right: earlier to later; dates may not be the same;
if tonumber(day) >= tonumber(day2) then return false; end -- date range order is left to right: earlier to later; dates may not be the same;
month = get_month_number (month);
month = get_month_number (month);
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
month2=month; -- for metadata
month2=month; -- for metadata
year2=year;
year2 = year;


elseif mw.ustring.match(date_string, "^[1-9]%d? +%D- +[1-9]%d%d%d%a?$") then -- day-initial: day month year
elseif mw.ustring.match(date_string, patterns['dMy'][1]) then -- day-initial: day month year
day, month, anchor_year, year=mw.ustring.match(date_string, "(%d%d*)%s*(%D-) +((%d%d%d%d?)%a?)");
day, month, anchor_year, year = mw.ustring.match(date_string, patterns['dMy'][1]);
month = get_month_number (month);
month = get_month_number (month);
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
if 0 == month then return false; end -- return false if month text isn't one of the twelve months


elseif mw.ustring.match(date_string, "^[1-9]%d?[%-–][1-9]%d? +%D- +[1-9]%d%d%d%a?$") then -- day-range-initial: day–day month year; days are separated by endash
--[[ NOT supported at en.wiki
day, day2, month, anchor_year, year=mw.ustring.match(date_string, "(%d%d?)[%-–](%d%d?) +(%D-) +((%d%d%d%d)%a?)");
elseif mw.ustring.match(date_string, patterns['yMd'][1]) then -- year-initial: year month day; day: 1 or 2 two digits, leading zero allowed
if tonumber(day) >= tonumber(day2) then return false; end -- date range order is left to right: earlier to later; dates may not be the same;
anchor_year, year, month, day = mw.ustring.match(date_string, patterns['yMd'][1]);
month = get_month_number (month);
month = get_month_number (month);
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
month2=month; -- for metadata
-- end NOT supported at en.wiki ]]
year2=year;


elseif mw.ustring.match(date_string, "^[1-9]%d? +%D- +[%-] +[1-9]%d? +%D- +[1-9]%d%d%d%a?$") then -- day initial month-day-range: day month - day month year; uses spaced endash
elseif mw.ustring.match(date_string, patterns['d-dMy'][1]) then -- day-range-initial: day–day month year; days are separated by endash
day, month, day2, month2, anchor_year, year=mw.ustring.match(date_string, "(%d%d?) +(%D-) +[%-–] +(%d%d?) +(%D-) +((%d%d%d%d)%a?)");
day, day2, month, anchor_year, year = mw.ustring.match(date_string, patterns['d-dMy'][1]);
if tonumber(day) >= tonumber(day2) then return false; end -- date range order is left to right: earlier to later; dates may not be the same;
month = get_month_number (month);
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
month2 = month; -- for metadata
year2 = year;
 
elseif mw.ustring.match(date_string, patterns['dM-dMy'][1]) then -- day initial month-day-range: day month - day month year; uses spaced endash
day, month, day2, month2, anchor_year, year = mw.ustring.match(date_string, patterns['dM-dMy'][1]);
if (not is_valid_month_season_range(month, month2)) or not is_valid_year(year) then return false; end -- date range order is left to right: earlier to later;
if (not is_valid_month_season_range(month, month2)) or not is_valid_year(year) then return false; end -- date range order is left to right: earlier to later;
month = get_month_number (month); -- for metadata
month = get_month_number (month); -- for metadata
month2 = get_month_number (month2);
month2 = get_month_number (month2);
year2=year;
year2 = year;


elseif mw.ustring.match(date_string, "^%D- +[1-9]%d? +[%-–] +%D- +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month initial month-day-range: month day – month day, year; uses spaced endash
elseif mw.ustring.match(date_string, patterns['Md-Mdy'][1]) then -- month initial month-day-range: month day – month day, year; uses spaced endash
month, day, month2, day2, anchor_year, year=mw.ustring.match(date_string, "(%D-) +(%d%d?) +[%-–] +(%D-) +(%d%d?), +((%d%d%d%d)%a?)");
month, day, month2, day2, anchor_year, year = mw.ustring.match(date_string, patterns['Md-Mdy'][1]);
if (not is_valid_month_season_range(month, month2)) or not is_valid_year(year) then return false; end
if (not is_valid_month_season_range(month, month2, param)) or not is_valid_year(year) then return false; end
month = get_month_number (month); -- for metadata
month = get_month_number (month); -- for metadata
month2 = get_month_number (month2);
month2 = get_month_number (month2);
year2=year;
year2 = year;


elseif mw.ustring.match(date_string, "^[1-9]%d? +%D- +[1-9]%d%d%d +[%-] +[1-9]%d? +%D- +[1-9]%d%d%d%a?$") then -- day initial month-day-year-range: day month year - day month year; uses spaced endash
elseif mw.ustring.match(date_string, patterns['dMy-dMy'][1]) then -- day initial month-day-year-range: day month year - day month year; uses spaced endash
day, month, year, day2, month2, anchor_year, year2=mw.ustring.match(date_string, "(%d%d?) +(%D-) +(%d%d%d%d) +[%-–] +(%d%d?) +(%D-) +((%d%d%d%d)%a?)");
day, month, year, day2, month2, anchor_year, year2 = mw.ustring.match(date_string, patterns['dMy-dMy'][1]);
if tonumber(year2) <= tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
if tonumber(year2) <= tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
if not is_valid_year(year2) or not is_valid_month_range_style(month, month2) then return false; end -- year2 no more than one year in the future; months same style
if not is_valid_year(year2) or not is_valid_month_range_style(month, month2) then return false; end -- year2 no more than one year in the future; months same style
month = get_month_number (month); -- for metadata
month = get_month_number (month); -- for metadata
month2 = get_month_number (month2);
month2 = get_month_number (month2);
if 0 == month or 0 == month2 then return false; end -- both must be valid


elseif mw.ustring.match(date_string, "^%D- +[1-9]%d?, +[1-9]%d%d%d +[%-–] +%D- +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month initial month-day-year-range: month day, year – month day, year; uses spaced endash
elseif mw.ustring.match(date_string, patterns['Mdy-Mdy'][1]) then -- month initial month-day-year-range: month day, year – month day, year; uses spaced endash
month, day, year, month2, day2, anchor_year, year2=mw.ustring.match(date_string, "(%D-) +(%d%d?), +(%d%d%d%d) +[%-–] +(%D-) +(%d%d?), +((%d%d%d%d)%a?)");
month, day, year, month2, day2, anchor_year, year2 = mw.ustring.match(date_string, patterns['Mdy-Mdy'][1]);
if tonumber(year2) <= tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
if tonumber(year2) <= tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
if not is_valid_year(year2) or not is_valid_month_range_style(month, month2) then return false; end -- year2 no more than one year in the future; months same style
if not is_valid_year(year2) or not is_valid_month_range_style(month, month2) then return false; end -- year2 no more than one year in the future; months same style
month = get_month_number (month); -- for metadata
month = get_month_number (month); -- for metadata
month2 = get_month_number (month2);
month2 = get_month_number(month2);
if 0 == month or 0 == month2 then return false; end -- both must be valid


elseif mw.ustring.match(date_string, "^%D- +[1-9]%d%d%d[%-–]%d%d%a?$") then -- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
elseif mw.ustring.match(date_string, patterns['Sy4-y2'][1]) then -- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
local century;
local century;
month, year, century, anchor_year, year2=mw.ustring.match(date_string, "(%D-) +((%d%d)%d%d)[%-–]((%d%d)%a?)");
month, year, century, anchor_year, year2 = mw.ustring.match(date_string, patterns['Sy4-y2'][1]);
if 'Winter' ~= month and 'Summer' ~= month then return false end; -- 'month' can only be Winter or Summer
if 'Winter' ~= month and 'Summer' ~= month then return false end; -- 'month' can only be Winter or Summer
anchor_year=year..'–'..anchor_year; -- assemble anchor_year from both years
anchor_year = year .. '–' .. anchor_year; -- assemble anchor_year from both years
year2 = century..year2; -- add the century to year2 for comparisons
year2 = century..year2; -- add the century to year2 for comparisons
if 1 ~= tonumber(year2) - tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
if 1 ~= tonumber(year2) - tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
month = get_season_number (month);
month = get_season_number(month, param);


elseif mw.ustring.match(date_string, "^%D- +[1-9]%d%d%d[%-–][1-9]%d%d%d%a?$") then -- special case Winter/Summer year-year; year separated with unspaced endash
elseif mw.ustring.match(date_string, patterns['Sy-y'][1]) then -- special case Winter/Summer year-year; year separated with unspaced endash
month, year, anchor_year, year2=mw.ustring.match(date_string, "(%D-) +(%d%d%d%d)[%-–]((%d%d%d%d)%a?)");
month, year, anchor_year, year2 = mw.ustring.match(date_string, patterns['Sy-y'][1]);
if 'Winter' ~= month and 'Summer' ~= month then return false end; -- 'month' can only be Winter or Summer
month = get_season_number (month, param); -- <month> can only be winter or summer; also for metadata
anchor_year=year..'–'..anchor_year; -- assemble anchor_year from both years
if (month ~= cfg.date_names['en'].season['Winter']) and (month ~= cfg.date_names['en'].season['Summer']) then
if 1 ~= tonumber(year2) - tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
return false; -- not Summer or Winter; abandon
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
end
month = get_season_number (month); -- for metadata
anchor_year = year .. '–' .. anchor_year; -- assemble anchor_year from both years
if 1 ~= tonumber(year2) - tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year


elseif mw.ustring.match(date_string, "^%D- +[1-9]%d%d%d +[%-–] +%D- +[1-9]%d%d%d%a?$") then -- month/season year - month/season year; separated by spaced endash
elseif mw.ustring.match(date_string, patterns['My-My'][1]) then -- month/season year - month/season year; separated by spaced endash
month, year, month2, anchor_year, year2=mw.ustring.match(date_string, "(%D-) +(%d%d%d%d) +[%-–] +(%D-) +((%d%d%d%d)%a?)");
month, year, month2, anchor_year, year2 = mw.ustring.match(date_string, patterns['My-My'][1]);
anchor_year=year..'–'..anchor_year; -- assemble anchor_year from both years
anchor_year = year .. '–' .. anchor_year; -- assemble anchor_year from both years
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
if 0 ~= get_month_number(month) and 0 ~= get_month_number(month2) and is_valid_month_range_style(month, month2) then -- both must be month year, same month style
if 0 ~= get_month_number(month) and 0 ~= get_month_number(month2) and is_valid_month_range_style(month, month2) then -- both must be month year, same month style
month = get_month_number(month);
month = get_month_number(month);
month2 = get_month_number(month2);
month2 = get_month_number(month2);
elseif 0 ~= get_season_number(month) and 0 ~= get_season_number(month2) then -- both must be or season year, not mixed
elseif 0 ~= get_season_number(month, param) and 0 ~= get_season_number(month2, param) then -- both must be season year, not mixed
month = get_season_number(month);
month = get_season_number(month, param);
month2 = get_season_number(month2);
month2 = get_season_number(month2, param);
else
else
return false;
return false;
end
end


elseif mw.ustring.match(date_string, "^%D-[%-]%D- +[1-9]%d%d%d%a?$") then -- month/season range year; months separated by endash  
elseif mw.ustring.match(date_string, patterns['M-My'][1]) then -- month/season range year; months separated by endash  
month, month2, anchor_year, year=mw.ustring.match(date_string, "(%D-)[%-–](%D-)%s*((%d%d%d%d)%a?)");
month, month2, anchor_year, year = mw.ustring.match(date_string, patterns['M-My'][1]);
if (not is_valid_month_season_range(month, month2)) or (not is_valid_year(year)) then return false; end
if (not is_valid_month_season_range(month, month2, param)) or (not is_valid_year(year)) then return false; end
if 0 ~= get_month_number(month) then -- determined to be a valid range so just check this one to know if month or season
if 0 ~= get_month_number(month) then -- determined to be a valid range so just check this one to know if month or season
month = get_month_number(month);
month = get_month_number(month);
month2 = get_month_number(month2);
month2 = get_month_number(month2);
if 0 == month or 0 == month2 then return false; end
else
else
month = get_season_number(month);
month = get_season_number(month, param);
month2 = get_season_number(month2);
month2 = get_season_number(month2, param);
end
end
year2=year;
year2 = year;
elseif mw.ustring.match(date_string, "^%D- +%d%d%d%d%a?$") then -- month/season year or proper-name year
elseif mw.ustring.match(date_string, patterns['My'][1]) then -- month/season/quarter/proper-name year
month, anchor_year, year=mw.ustring.match(date_string, "(%D-)%s*((%d%d%d%d)%a?)");
month, anchor_year, year = mw.ustring.match(date_string, patterns['My'][1]);
if not is_valid_year(year) then return false; end
if not is_valid_year(year) then return false; end
if not is_valid_month_or_season (month) and 0 == is_proper_name (month) then return false; end
month = get_element_number(month, param); -- get month season quarter proper-name number or nil
if 0 ~= get_month_number(month) then -- determined to be a valid range so just check this one to know if month or season
if not month then return false; end -- not valid whatever it is
month = get_month_number(month);
elseif 0 ~= get_season_number(month) then
month = get_season_number(month);
else
month = is_proper_name (month); -- must be proper name; not supported in COinS
end


elseif mw.ustring.match(date_string, "^[1-9]%d%d%d?[%-–][1-9]%d%d%d?%a?$") then -- Year range: YYY-YYY or YYY-YYYY or YYYY–YYYY; separated by unspaced endash; 100-9999
elseif mw.ustring.match(date_string, patterns['y-y'][1]) then -- Year range: YYY-YYY or YYY-YYYY or YYYY–YYYY; separated by unspaced endash; 100-9999
year, anchor_year, year2=mw.ustring.match(date_string, "(%d%d%d%d?)[%-]((%d%d%d%d?)%a?)");
year, anchor_year, year2 = mw.ustring.match(date_string, patterns['y-y'][1]);
anchor_year=year..'–'..anchor_year; -- assemble anchor year from both years
anchor_year = year .. '–' .. anchor_year; -- assemble anchor year from both years
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year


elseif mw.ustring.match(date_string, "^[1-9]%d%d%d[%-–]%d%d%a?$") then -- Year range: YYYY–YY; separated by unspaced endash
elseif mw.ustring.match(date_string, patterns['y4-y2'][1]) then -- Year range: YYYY–YY; separated by unspaced endash
local century;
local century;
year, century, anchor_year, year2=mw.ustring.match(date_string, "((%d%d)%d%d)[%-]((%d%d)%a?)");
year, century, anchor_year, year2 = mw.ustring.match(date_string, patterns['y4-y2'][1]);
anchor_year=year..'–'..anchor_year; -- assemble anchor year from both years
anchor_year = year .. '–' .. anchor_year; -- assemble anchor year from both years
 
if 13 > tonumber(year2) then return false; end -- don't allow 2003-05 which might be May 2003
if 13 > tonumber(year2) then return false; end -- don't allow 2003-05 which might be May 2003
year2 = century..year2; -- add the century to year2 for comparisons
year2 = century .. year2; -- add the century to year2 for comparisons
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year


elseif date_string:match("^[1-9]%d%d%d?%a?$") then -- year; here accept either YYY or YYYY
if in_array (param, {'date', 'publication-date', 'year'}) then -- here when 'valid' abbreviated year range; if one of these parameters
anchor_year, year=date_string:match("((%d%d%d%d?)%a?)");
add_prop_cat ('year-range-abbreviated'); -- add properties cat
end
 
elseif mw.ustring.match(date_string, patterns['y'][1]) then -- year; here accept either YYY or YYYY
anchor_year, year = mw.ustring.match(date_string, patterns['y'][1]);
if false == is_valid_year(year) then
if false == is_valid_year(year) then
return false;
return false;
Line 512: Line 649:
end
end


if test_accessdate then -- test accessdate here because we have numerical date parts
if param ~= 'date' then -- CITEREF disambiguation only allowed in |date=; |year= & |publication-date= promote to date
if anchor_year:match ('%l$') then
return false;
end
end
 
if 'access-date' == param then -- test access-date here because we have numerical date parts
if 0 ~= year and 0 ~= month and 0 ~= day and -- all parts of a single date required
if 0 ~= year and 0 ~= month and 0 ~= day and -- all parts of a single date required
0 == year2 and 0 == month2 and 0 == day2 then -- none of these; accessdate must not be a range
0 == year2 and 0 == month2 and 0 == day2 then -- none of these; access-date must not be a range
if not is_valid_accessdate (year..'-'..month..'-'..day) then
if not is_valid_accessdate(year .. '-' .. month .. '-' .. day) then
return false; -- return false when accessdate out of bounds
return false; -- return false when access-date out of bounds
end
end
else
else
return false; -- return false when accessdate is a range of two dates
return false; -- return false when access-date is a range of two dates
end
end
 
if 'archive-date' == param then -- test archive-date here because we have numerical date parts
if not (0 ~= year and 0 ~= month and 0 ~= day and -- all parts of a single date required
0 == year2 and 0 == month2 and 0 == day2) then -- none of these; archive-date must not be a range
return false; -- return false when archive-date is a range of two dates
end
end
end
end
Line 525: Line 675:
local result=true; -- check whole dates for validity; assume true because not all dates will go through this test
local result=true; -- check whole dates for validity; assume true because not all dates will go through this test
if 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 == day2 then -- YMD (simple whole date)
if 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 == day2 then -- YMD (simple whole date)
result=is_valid_date(year,month,day);
result = is_valid_date (year, month, day, param); -- <param> for |pmc-embargo-date=


elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 ~= day2 then -- YMD-d (day range)
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 ~= day2 then -- YMD-d (day range)
result=is_valid_date(year,month,day);
result = is_valid_date (year, month, day);
result=result and is_valid_date(year,month,day2);
result = result and is_valid_date (year, month, day2);


elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 ~= month2 and 0 ~= day2 then -- YMD-md (day month range)
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 ~= month2 and 0 ~= day2 then -- YMD-md (day month range)
result=is_valid_date(year,month,day);
result = is_valid_date (year, month, day);
result=result and is_valid_date(year,month2,day2);
result = result and is_valid_date (year, month2, day2);


elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 ~= year2 and 0 ~= month2 and 0 ~= day2 then -- YMD-ymd (day month year range)
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 ~= year2 and 0 ~= month2 and 0 ~= day2 then -- YMD-ymd (day month year range)
result=is_valid_date(year,month,day);
result = is_valid_date(year, month, day);
result=result and is_valid_date(year2,month2,day2);
result = result and is_valid_date(year2, month2, day2);
end
end
Line 543: Line 693:


if nil ~= tCOinS_date then -- this table only passed into this function when testing |date= parameter values
if nil ~= tCOinS_date then -- this table only passed into this function when testing |date= parameter values
make_COinS_date ({year=year, month=month, day=day, year2=year2, month2=month2, day2=day2}, tCOinS_date); -- make an ISO 8601 date string for COinS
make_COinS_date ({year = year, month = month, day = day, year2 = year2, month2 = month2, day2 = day2}, tCOinS_date); -- make an ISO 8601 date string for COinS
end
end
Line 557: Line 707:


Unlike most error messages created in this module, only one error message is created by this function. Because all of the date holding parameters are processed serially,
Unlike most error messages created in this module, only one error message is created by this function. Because all of the date holding parameters are processed serially,
a single error message is created as the dates are tested.
parameters with errors are added to the <error_list> sequence table as the dates are tested.


]]
]]


local function dates(date_parameters_list, tCOinS_date)
local function dates(date_parameters_list, tCOinS_date, error_list)
local anchor_year; -- will return as nil if the date being tested is not |date=
local anchor_year; -- will return as nil if the date being tested is not |date=
local COinS_date; -- will return as nil if the date being tested is not |date=
local COinS_date; -- will return as nil if the date being tested is not |date=
local embargo_date; -- if embargo date is a good dmy, mdy, ymd date then holds original value else reset to 9999
local embargo_date; -- if embargo date is a good dmy, mdy, ymd date then holds original value else reset to 9999
local error_message = "";
local good_date = false;
local good_date = false;
 
for k, v in pairs(date_parameters_list) do -- for each date-holding parameter in the list
for k, v in pairs(date_parameters_list) do -- for each date-holding parameter in the list
if is_set(v) then -- if the parameter has a value
if is_set(v.val) then -- if the parameter has a value
if v:match("^c%. [1-9]%d%d%d?%a?$") then -- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
v.val = mw.ustring.gsub(v.val, '%d', cfg.date_names.local_digits); -- translate 'local' digits to Western 0-9
v = mw.ustring.gsub (v, '%d', cfg.date_names.local_digits);
if v.val:match("^c%. [1-9]%d%d%d?%a?$") then -- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
local year = v:match("c%. ([1-9]%d%d%d?)%a?"); -- get the year portion so it can be tested
local year = v.val:match("c%. ([1-9]%d%d%d?)%a?"); -- get the year portion so it can be tested
if 'date'==k then
if 'date' == k then
anchor_year, COinS_date = v:match("((c%. [1-9]%d%d%d?)%a?)"); -- anchor year and COinS_date only from |date= parameter
anchor_year, COinS_date = v.val:match("((c%. [1-9]%d%d%d?)%a?)"); -- anchor year and COinS_date only from |date= parameter
good_date = is_valid_year(year);
good_date = is_valid_year(year);
elseif 'year'==k then
elseif 'year' == k then
good_date = is_valid_year(year);
good_date = is_valid_year(year);
end
end
elseif 'date'==k then -- if the parameter is |date=
elseif 'date' == k then -- if the parameter is |date=
if v:match("^n%.d%.%a?$") then -- if |date=n.d. with or without a CITEREF disambiguator
if v.val:match("^n%.d%.%a?$") then -- ToDo: I18N -- if |date=n.d. with or without a CITEREF disambiguator
good_date, anchor_year, COinS_date = true, v:match("((n%.d%.)%a?)"); --"n.d."; no error when date parameter is set to no date
good_date, anchor_year, COinS_date = true, v.val:match("((n%.d%.)%a?)"); -- ToDo: I18N -- "n.d."; no error when date parameter is set to no date
elseif v:match("^nd%a?$") then -- if |date=nd with or without a CITEREF disambiguator
elseif v.val:match("^nd%a?$") then -- ToDo: I18N -- if |date=nd with or without a CITEREF disambiguator
good_date, anchor_year, COinS_date = true, v:match("((nd)%a?)"); --"nd"; no error when date parameter is set to no date
good_date, anchor_year, COinS_date = true, v.val:match("((nd)%a?)"); -- ToDo: I18N -- "nd"; no error when date parameter is set to no date
else
else
good_date, anchor_year, COinS_date = check_date (v, tCOinS_date); -- go test the date
good_date, anchor_year, COinS_date = check_date (v.val, k, tCOinS_date); -- go test the date
end
end
elseif 'year'==k then -- if the parameter is |year= it should hold only a year value
elseif 'year' == k then -- if the parameter is |year= it should hold only a year value
if v:match("^[1-9]%d%d%d?%a?$") then -- if |year= 3 or 4 digits only with or without a CITEREF disambiguator
if v.val:match("^[1-9]%d%d%d?%a?$") then -- if |year = 3 or 4 digits only with or without a CITEREF disambiguator
good_date, anchor_year, COinS_date = true, v:match("((%d+)%a?)");
good_date, anchor_year, COinS_date = true, v.val:match("((%d+)%a?)");
end
end
elseif 'access-date'==k then -- if the parameter is |date=
elseif 'pmc-embargo-date' == k then -- if the parameter is |pmc-embargo-date=
good_date = check_date (v, nil, true); -- go test the date; nil is a placeholder; true is the test_accessdate flag
good_date = check_date (v.val, k); -- go test the date
elseif 'embargo'==k then -- if the parameter is |embargo=
good_date = check_date (v); -- go test the date
if true == good_date then -- if the date is a valid date
if true == good_date then -- if the date is a valid date
good_date, embargo_date = is_valid_embargo_date (v); -- is |embargo= date a single dmy, mdy, or ymd formatted date? yes:returns embargo; no: returns 9999
good_date, embargo_date = is_valid_embargo_date (v.val); -- is |pmc-embargo-date= date a single dmy, mdy, or ymd formatted date? yes: returns embargo date; no: returns 9999
end
end
else -- any other date-holding parameter
else -- any other date-holding parameter
good_date = check_date (v); -- go test the date
good_date = check_date (v.val, k); -- go test the date
end
end
if false==good_date then -- assemble one error message so we don't add the tracking category multiple times
if false == good_date then -- assemble one error message so we don't add the tracking category multiple times
if is_set(error_message) then -- once we've added the first portion of the error message ...
table.insert (error_list, wrap_style ('parameter', v.name)); -- make parameter name suitable for error message list
error_message=error_message .. ", "; -- ... add a comma space separator
end
error_message=error_message .. "&#124;" .. k .. "="; -- add the failed parameter
end
end
end
end
end
end
return anchor_year, embargo_date, error_message; -- and done
return anchor_year, embargo_date; -- and done
end
end


Line 615: Line 759:
--[[--------------------------< Y E A R _ D A T E _ C H E C K >------------------------------------------------
--[[--------------------------< Y E A R _ D A T E _ C H E C K >------------------------------------------------


Compare the value provided in |year= with the year value(s) provided in |date=.  This function returns a numeric value:
Compare the value provided in |year= with the year value(s) provided in |date=.  This function sets a local numeric value:
0 - year value does not match the year value in date
0 - year value does not match the year value in date
1 - (default) year value matches the year value in date or one of the year values when date contains two years
1 - (default) year value matches the year value in date or one of the year values when date contains two years
2 - year value matches the year value in date when date is in the form YYYY-MM-DD and year is disambiguated (|year=YYYYx)
2 - year value matches the year value in date when date is in the form YYYY-MM-DD and year is disambiguated (|year=YYYYx)
the numeric value in <result> determines the 'output' if any from this function:
0 – adds error message to error_list sequence table
1 – adds maint cat
2 – does nothing


]]
]]


local function year_date_check (year_string, date_string)
local function year_date_check (year_string, year_origin, date_string, date_origin, error_list)
local year;
local year;
local date1;
local date1;
local date2;
local date2;
local result = 1; -- result of the test; assume that the test passes
local result = 1; -- result of the test; assume that the test passes
 
year = year_string:match ('(%d%d%d%d?)');
year = year_string:match ('(%d%d%d%d?)');


Line 645: Line 794:
end
end


elseif mw.ustring.match(date_string, "%d%d%d%d[%-–]%d%d") then -- YYYY-YY date ranges
elseif mw.ustring.match(date_string, "%d%d%d%d[%-–]%d%d") then -- YYYY-YY date ranges
local century;
local century;
date1, century, date2 = mw.ustring.match(date_string, "((%d%d)%d%d)[%-–]+(%d%d)");
date1, century, date2 = mw.ustring.match(date_string, "((%d%d)%d%d)[%-–]+(%d%d)");
Line 658: Line 807:
result = 0;
result = 0;
end
end
else
else -- should never get here; this function called only when no other date errors
result = 0; -- no recognizable year in date
result = 0; -- no recognizable year in date
end
end
return result;
 
if 0 == result then -- year / date mismatch
table.insert (error_list, substitute (cfg.messages['mismatch'], {year_origin, date_origin})); -- add error message to error_list sequence table
elseif 1 == result then -- redundant year / date
set_message ('maint_date_year'); -- add a maint cat
end
end
end




--[[-------------------------< R E F O R M A T   T A B L E S >------------------------------------------------
--[[--------------------------< R E F O R M A T T E R >--------------------------------------------------------
 
These table are used exclusively for reformatting dates


]]
reformat 'date' into new format specified by format_param if pattern_idx (the current format of 'date') can be
reformatted.  Does the grunt work for reformat_dates().


local source_patterns = { -- this table holds patterns that match allowed date formats used to extract date components
The table re_formats maps pattern_idx (current format) and format_param (desired format) to a table that holds:
['dmy'] = '^(%d%d?)%s+(%a+)%s+(%d%d%d%d)$',
format string used by string.format()
['mdy'] = '^(%a+)%s+(%d%d?),%s+(%d%d%d%d)$',
identifier letters ('d', 'm', 'y', 'd2', 'm2', 'y2') that serve as indexes into a table t{} that holds captures
['ymd'] = '^(%d%d%d%d)%-(%d%d)-(%d%d)$',
from mw.ustring.match() for the various date parts specified by  patterns[pattern_idx][1]
}


local short_formats = { -- this table holds format strings used by os.date() for short month names
Items in patterns{} have the general form:
['dmy'] = '%e %b %Y',
['ymd'] = {'^(%d%d%d%d)%-(%d%d)%-(%d%d)$', 'y', 'm', 'd'}, where:
['mdy'] = '%b %e, %Y',
['ymd'] is pattern_idx
['ymd'] = '%F',
patterns['ymd'][1] is the match pattern with captures for mw.ustring.match()
}
patterns['ymd'][2] is an indicator letter identifying the content of the first capture
patterns['ymd'][3] ... the second capture etc.


local long_formats = { -- this table holds format strings used by os.date() for long month names
when a pattern matches a date, the captures are loaded into table t{} in capture order using the idemtifier
['dmy'] = '%e %B %Y',
characters as indexes into t{}  For the above, a ymd date is in t{} as:
['mdy'] = '%B %e, %Y',
t.y = first capture (year), t.m = second capture (month), t.d = third capture (day)
['ymd'] = '%F',
}


 
To reformat, this function is called with the pattern_idx that matches the current format of the date and with
--[[-------------------------< G E T _ D M Y _ D A T E _ P A R T S >------------------------------------------
format_param set to the desired format.  This function loads table t{} as described and then calls string.format()
 
with the format string specified by re_format[pattern_idx][format_param][1] using values taken from t{} according
extracts year, month and day from DMY formatted date, places them in the source_date table, and returns.
to the capture identifier letters specified by patterns[pattern_idx][format_param][n] where n is 2..


]]
]]


local function get_dmy_date_parts (date, source_date)
local re_formats = {
source_date.day, source_date.month, source_date.year = date:match (source_patterns['dmy']); -- get date components as strings
['ymd'] = { -- date format is ymd; reformat to:
source_date.month = get_month_number (source_date.month); -- get month number
['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- |df=mdy
end
['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- |df=dmy
-- ['yMd'] = {'%s %s %s', 'y', 'm', 'd'}, -- |df=yMd; not supported at en.wiki
},
['Mdy'] = { -- date format is Mdy; reformat to:
['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- for long/short reformatting
['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- |df=dmy
['ymd'] = {'%s-%s-%s', 'y', 'm', 'd'}, -- |df=ymd
-- ['yMd'] = {'%s %s %s', 'y', 'm', 'd'}, -- |df=yMd; not supported at en.wiki
},
['dMy'] = { -- date format is dMy; reformat to:
['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- for long/short reformatting
['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- |df=mdy
['ymd'] = {'%s-%s-%s', 'y', 'm', 'd'}, -- |df=ymd
-- ['yMd'] = {'%s %s %s', 'y', 'm', 'd'}, -- |df=yMd; not supported at en.wiki
},
['Md-dy'] = { -- date format is Md-dy; reformat to:
['mdy'] = {'%s %s–%s, %s', 'm', 'd', 'd2', 'y'}, -- for long/short reformatting
['dmy'] = {'%s–%s %s %s', 'd', 'd2', 'm', 'y'}, -- |df=dmy -> d-dMy
},
['d-dMy'] = { -- date format is d-d>y; reformat to:
['dmy'] = {'%s–%s %s %s', 'd', 'd2', 'm', 'y'}, -- for long/short reformatting
['mdy'] = {'%s %s–%s, %s', 'm', 'd', 'd2', 'y'}, -- |df=mdy -> Md-dy
},
['dM-dMy'] = { -- date format is dM-dMy; reformat to:
['dmy'] = {'%s %s – %s %s %s', 'd', 'm', 'd2', 'm2', 'y'}, -- for long/short reformatting
['mdy'] = {'%s %s – %s %s, %s', 'm', 'd', 'm2', 'd2', 'y'}, -- |df=mdy -> Md-Mdy
},
['Md-Mdy'] = { -- date format is Md-Mdy; reformat to:
['mdy'] = {'%s %s – %s %s, %s', 'm', 'd',  'm2', 'd2', 'y'}, -- for long/short reformatting
['dmy'] = {'%s %s – %s %s %s', 'd', 'm', 'd2', 'm2', 'y'}, -- |df=dmy -> dM-dMy
},
['dMy-dMy'] = { -- date format is dMy-dMy; reformat to:
['dmy'] = {'%s %s %s – %s %s %s', 'd', 'm', 'y', 'd2', 'm2', 'y2'}, -- for long/short reformatting
['mdy'] = {'%s %s, %s – %s %s, %s', 'm', 'd', 'y', 'm2', 'd2', 'y2'}, -- |df=mdy -> Mdy-Mdy
},
['Mdy-Mdy'] = { -- date format is Mdy-Mdy; reformat to:
['mdy'] = {'%s %s, %s – %s %s, %s', 'm', 'd', 'y', 'm2', 'd2', 'y2'}, -- for long/short reformatting
['dmy'] = {'%s %s %s – %s %s %s', 'd', 'm', 'y', 'd2', 'm2', 'y2'}, -- |df=dmy -> dMy-dMy
},
['My-My'] = { -- these for long/short reformatting
['any'] = {'%s %s – %s %s', 'm', 'y', 'm2', 'y2'}, -- dmy/mdy agnostic
},
['M-My'] = { -- these for long/short reformatting
['any'] = {'%s–%s %s', 'm', 'm2', 'y'}, -- dmy/mdy agnostic
},
['My'] = { -- these for long/short reformatting
['any'] = {'%s %s', 'm', 'y'}, -- dmy/mdy agnostic
},
-- ['yMd'] = { -- not supported at en.wiki
-- ['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- |df=mdy
-- ['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- |df=dmy
-- ['ymd'] = {'%s-%s-%s', 'y', 'm', 'd'}, -- |df=ymd
-- },
}




--[[-------------------------< G E T _ M D Y _ D A T E _ P A R T S >------------------------------------------
local function reformatter (date, pattern_idx, format_param, mon_len)
if not in_array (pattern_idx, {'ymd', 'Mdy', 'Md-dy', 'dMy', 'yMd', 'd-dMy', 'dM-dMy', 'Md-Mdy', 'dMy-dMy', 'Mdy-Mdy', 'My-My', 'M-My', 'My'}) then
return; -- not in this set of date format patterns then not a reformattable date
end
if 'ymd' == format_param and in_array (pattern_idx, {'ymd', 'Md-dy', 'd-dMy', 'dM-dMy', 'Md-Mdy', 'dMy-dMy', 'Mdy-Mdy', 'My-My', 'M-My', 'My'}) then
return; -- ymd date ranges not supported at en.wiki; no point in reformatting ymd to ymd
end


extracts year, month and day from MDY formatted date, places them in the source_date table, and returns.
if in_array (pattern_idx, {'My', 'M-My', 'My-My'}) then -- these are not dmy/mdy so can't be 'reformatted' into either
format_param = 'any'; -- so format-agnostic
end


]]
-- yMd is not supported at en.wiki; when yMd is supported at your wiki, uncomment the next line
-- if 'yMd' == format_param and in_array (pattern_idx, {'yMd', 'Md-dy', 'd-dMy', 'dM-dMy', 'Md-Mdy', 'dMy-dMy', 'Mdy-Mdy'}) then -- these formats not convertable; yMd not supported at en.wiki
if 'yMd' == format_param then -- yMd not supported at en.wiki; when yMd is supported at your wiki, remove or comment-out this line
return; -- not a reformattable date
end
local c1, c2, c3, c4, c5, c6, c7; -- these hold the captures specified in patterns[pattern_idx][1]
c1, c2, c3, c4, c5, c6, c7 = mw.ustring.match (date, patterns[pattern_idx][1]); -- get the captures


local function get_mdy_date_parts (date, source_date)
local t = { -- table that holds k/v pairs of date parts from the captures and patterns[pattern_idx][2..]
source_date.month, source_date.day, source_date.year = date:match (source_patterns['mdy']); -- get date components as strings
[patterns[pattern_idx][2]] = c1; -- at minimum there is always one capture with a matching indicator letter
source_date.month = get_month_number (source_date.month); -- get month number
[patterns[pattern_idx][3] or 'x'] = c2; -- patterns can have a variable number of captures; each capture requires an indicator letter;
end
[patterns[pattern_idx][4] or 'x'] = c3; -- where there is no capture, there is no indicator letter so n in patterns[pattern_idx][n] will be nil;
[patterns[pattern_idx][5] or 'x'] = c4; -- the 'x' here spoofs an indicator letter to prevent 'table index is nil' error
[patterns[pattern_idx][6] or 'x'] = c5;
[patterns[pattern_idx][7] or 'x'] = c6;
[patterns[pattern_idx][8] or 'x'] = c7;
};


if t.a then -- if this date has an anchor year capture (all convertable date formats except ymd)
if t.y2 then -- for year range date formats
t.y2 = t.a; -- use the anchor year capture when reassembling the date
else -- here for single date formats (except ymd)
t.y = t.a; -- use the anchor year capture when reassembling the date
end
end


--[[-------------------------< G E T _ Y M D _ D A T E _ P A R T S >------------------------------------------
if tonumber(t.m) then -- if raw month is a number (converting from ymd)
if 's' == mon_len then -- if we are to use abbreviated month names
t.m = cfg.date_names['inv_local_short'][tonumber(t.m)]; -- convert it to a month name
else
t.m = cfg.date_names['inv_local_long'][tonumber(t.m)]; -- convert it to a month name
end
t.d = t.d:gsub ('0(%d)', '%1'); -- strip leading '0' from day if present
elseif 'ymd' == format_param then -- when converting to ymd
t.y = t.y:gsub ('%a', ''); -- strip CITREF disambiguator if present; anchor year already known so process can proceed; TODO: maint message?
if 1582 > tonumber (t.y) then -- ymd format dates not allowed before 1582
return;
end
t.m = string.format ('%02d', get_month_number (t.m)); -- make sure that month and day are two digits
t.d = string.format ('%02d', t.d);
elseif mon_len then -- if mon_len is set to either 'short' or 'long'
for _, mon in ipairs ({'m', 'm2'}) do -- because there can be two month names, check both
if t[mon] then
t[mon] = get_month_number (t[mon]); -- get the month number for this month (is length agnostic)
if 0 == t[mon] then return; end -- seasons and named dates can't be converted
t[mon] = (('s' == mon_len) and cfg.date_names['inv_local_short'][t[mon]]) or cfg.date_names['inv_local_long'][t[mon]]; -- fetch month name according to length
end
end
end


extracts year, month and day from YMD formatted date, places them in the source_date table, and returns.
local new_date = string.format (re_formats[pattern_idx][format_param][1], -- format string
t[re_formats[pattern_idx][format_param][2]], -- named captures from t{}
t[re_formats[pattern_idx][format_param][3]],
t[re_formats[pattern_idx][format_param][4]],
t[re_formats[pattern_idx][format_param][5]],
t[re_formats[pattern_idx][format_param][6]],
t[re_formats[pattern_idx][format_param][7]],
t[re_formats[pattern_idx][format_param][8]]
);


]]
return new_date;
 
local function get_ymd_date_parts (date, source_date)
source_date.year, source_date.month, source_date.day = date:match (source_patterns['ymd']); -- get date components as strings
end
end


Line 727: Line 986:
--[[-------------------------< R E F O R M A T _ D A T E S >--------------------------------------------------
--[[-------------------------< R E F O R M A T _ D A T E S >--------------------------------------------------


Reformats existing dates into the format specified by format and short.
Reformats existing dates into the format specified by format.


format is one of several keywords: dmy, dmy-all, mdy, mdy-all, ymd, ymd-all.  The all version includes access- and
format is one of several manual keywords: dmy, dmy-all, mdy, mdy-all, ymd, ymd-all.  The -all version includes
archive-dates; otherwise these dates are not reformatted
access- and archive-dates; otherwise these dates are not reformatted.


Date ranges, season dates, proper name dates are not currently supported.
This function allows automatic date formatting.  In ~/Configuration, the article source is searched for one of
the {{use xxx dates}} templates.  If found, xxx becomes the global date format as xxx-all.  If |cs1-dates= in
{{use xxx dates}} has legitimate value then that value determines how cs1|2 dates will be rendered.  Legitimate
values for |cs1-dates= are:
l - all dates are rendered with long month names
ls - publication dates use long month names; access-/archive-dates use abbreviated month names
ly - publication dates use long month names; access-/archive-dates rendered in ymd format
s - all dates are rendered with abbreviated (short) month names
sy - publication dates use abbreviated month names; access-/archive-dates rendered in ymd format
y - all dates are rendered in ymd format


For i18n:  This code works only at en.wiki because os.date() doesn't support any languages other than English.
the format argument for automatic date formatting will be the format specified by {{use xxx dates}} with the
mw.getContentLanguage():formatDate() will work at non-English wikis only when the date format is yyyy-mm-dd. This is
value supplied by |cs1-dates so one of: xxx-l, xxx-ls, xxx-ly, xxx-s, xxx-sy, xxx-y, or simply xxx (|cs1-dates=
the same issue that plagues is_valid_accessdate()
empty, omitted, or invalid) where xxx shall be either of dmy or mdy.


It is possible that a solution like that written for ht:Module:Citation/CS1/Date_validation date_name_xlate() could be applied to this problem
dates are extracted from date_parameters_list, reformatted (if appropriate), and then written back into the
list in the new format.  Dates in date_parameters_list are presumed here to be valid (no errors).  This function
returns true when a date has been reformatted, false else.  Actual reformatting is done by reformatter().


]]
]]


local function reformat_dates (date_parameters_list, format, short)
local function reformat_dates (date_parameters_list, format)
local all = false; -- set to false to skip access- and archive-dates
local all = false; -- set to false to skip access- and archive-dates
local format_str;
local len_p = 'l'; -- default publication date length shall be long
local source_date = {};
local len_a = 'l'; -- default access-/archive-date length shall be long
local result = false;
local new_date;
if format:match('%a+%-all') then
if format:match('%a+%-all') then -- manual df keyword; auto df keyword when length not specified in {{use xxx dates}};
format = format:match('(%a+)%-all'); -- extract the format
format = format:match('(%a+)%-all'); -- extract the format
all = true; -- set to true to format access- and archive-dates
all = true; -- all dates are long format dates because this keyword doesn't specify length
end
elseif format:match('%a+%-[lsy][sy]?') then -- auto df keywords; internal only
all = true; -- auto df applies to all dates; use length specified by capture len_p for all dates
format, len_p, len_a = format:match('(%a+)%-([lsy])([sy]?)'); -- extract the format and length keywords
if 'y' == len_p then -- because allowed by MOS:DATEUNIFY (sort of) range dates and My dates not reformatted
format = 'ymd'; -- override {{use xxx dates}}
elseif (not is_set(len_a)) or (len_p == len_a) then -- no access-/archive-date length specified or same length as publication dates then
len_a = len_p; -- in case len_a not set
end
end -- else only publication dates and they are long
 
for param_name, param_val in pairs (date_parameters_list) do -- for each date-holding parameter in the list
for param_name, param_val in pairs (date_parameters_list) do -- for each date-holding parameter in the list
if is_set (param_val) then -- if the parameter has a value
if is_set (param_val.val) then -- if the parameter has a value
if not all and in_array (param_name, {'access-date', 'archive-date'}) then -- if access- or archive-date and format not xxx-all
if not (not all and in_array (param_name, {'access-date', 'archive-date'})) then -- skip access- or archive-date unless format is xxx-all; yeah, ugly; TODO: find a better way
param_val = ''; -- set to empty string so we don't process this date
for pattern_idx, pattern in pairs (patterns) do
end
if mw.ustring.match (param_val.val, pattern[1]) then
for source, pattern in pairs (source_patterns) do
if all and in_array (param_name, {'access-date', 'archive-date'}) then -- if this date is an access- or archive-date
if param_val:match (pattern) then
new_date = reformatter (param_val.val, pattern_idx, (('y' == len_a) and 'ymd') or format, len_a); -- choose ymd or dmy/mdy according to len_a setting
if 'ymd' == source then
else -- all other dates
get_ymd_date_parts (param_val, source_date); -- get the date parts into the source_date table
new_date = reformatter (param_val.val, pattern_idx, format, len_p);
elseif 'dmy' == source then
end
get_dmy_date_parts (param_val, source_date); -- get the date parts into the source_date table
elseif 'mdy' == source then
if new_date then -- set when date was reformatted
get_mdy_date_parts (param_val, source_date); -- get the date parts into the source_date table
date_parameters_list[param_name].val = new_date; -- update date in date list
end
result = true; -- and announce that changes have been made
 
break;
if 'ymd' == format and 1582 > tonumber(source_date.year) then -- ymd format dates not allowed before 1582
end
return false; -- abandon reformatting
end -- if
end
end -- for
end -- if
if short then
end -- if
format_str = short_formats[format];
end -- for
else
return result; -- declare boolean result and done
format_str = long_formats[format];
end
-- convert date and save;
date_parameters_list[param_name] = mw.text.trim (os.date (format_str, os.time(source_date))); -- strip leading space when single digit day and %e is first format
end
end
end
end
return true; -- declare success and done
end
end


Line 799: Line 1,070:
local n;
local n;
for param_name, param_val in pairs(date_parameters_list) do -- for each date-holding parameter in the list
for param_name, param_val in pairs(date_parameters_list) do -- for each date-holding parameter in the list
if not param_val:match ('%d%d%d%d%-%d%d%-%d%d') then -- for those that are not ymd dates
if is_set (param_val.val) and
param_val, n = param_val:gsub ('%-', '–'); -- replace any hyphen with ndash
not mw.ustring.match (param_val.val, patterns.ymd[1]) then -- for those that are not ymd dates (ustring because here digits may not be Western)
if 0 ~= n then
param_val.val, n = param_val.val:gsub ('%-', '–'); -- replace any hyphen with ndash
date_parameters_list[param_name] = param_val; -- update the list
if 0 ~= n then
result = true;
date_parameters_list[param_name].val = param_val.val; -- update the list
end
result = true;
end
end
end
end
end
Line 813: Line 1,085:
--[[-------------------------< D A T E _ N A M E _ X L A T E >------------------------------------------------
--[[-------------------------< D A T E _ N A M E _ X L A T E >------------------------------------------------


Attempts to translate English month names to local-language month names using names supplied by MediaWiki's
Attempts to translate English date names to local-language date names using names supplied by MediaWiki's
date parser function.  This is simple name-for-name replacement and may not work for all languages.
date parser function.  This is simple name-for-name replacement and may not work for all languages.
if xlat_dig is true, this function will also translate Western (English) digits to the local language's digits.
This will also translate ymd dates.


]]
]]


local function date_name_xlate (date_parameters_list)
local function date_name_xlate (date_parameters_list, xlt_dig)
local xlate;
local xlate;
local mode; -- long or short month names
local mode; -- long or short month names
Line 824: Line 1,099:
local date;
local date;
local sources_t = {
{cfg.date_names.en.long, cfg.date_names.inv_local_long}, -- for translating long English month names to long local month names
{cfg.date_names.en.short, cfg.date_names.inv_local_short}, -- short month names
{cfg.date_names.en.quarter, cfg.date_names.inv_local_quarter}, -- quarter date names
{cfg.date_names.en.season, cfg.date_names.inv_local_season}, -- season date nam
{cfg.date_names.en.named, cfg.date_names.inv_local_named}, -- named dates
}
local function is_xlateable (month) -- local function to get local date name that replaces existing English-language date name
for _, date_names_t in ipairs (sources_t) do -- for each sequence table in date_names_t
if date_names_t[1][month] then -- if date name is English month (long or short), quarter, season or named and
if date_names_t[2][date_names_t[1][month]] then -- if there is a matching local date name
return date_names_t[2][date_names_t[1][month]]; -- return the local date name
end
end
end
end
for param_name, param_val in pairs(date_parameters_list) do -- for each date-holding parameter in the list
for param_name, param_val in pairs(date_parameters_list) do -- for each date-holding parameter in the list
if is_set(param_val) then -- if the parameter has a value
if is_set(param_val.val) then -- if the parameter has a value
date = param_val;
date = param_val.val;
for month in mw.ustring.gmatch (date, '%a+') do -- iterate through all dates in the date (single date or date range)
for month in mw.ustring.gmatch (date, '[%a ]+') do -- iterate through all date names in the date (single date or date range)
if cfg.date_names.en.long[month] then
month = mw.text.trim (month); -- this because quarterly dates contain whitespace
mode = 'F'; -- English name is long so use long local name
xlate = is_xlateable (month); -- get translate <month>; returns translation or nil
elseif cfg.date_names.en.short[month] then
mode = 'M'; -- English name is short so use short local name
if xlate then
else
date = mw.ustring.gsub (date, month, xlate); -- replace the English with the translation
mode = nil; -- not an English month name; could be local language month name or an English season name
date_parameters_list[param_name].val = date; -- save the translated date
end
if mode then -- might be a season
xlate = mw.getContentLanguage():formatDate(mode, '1' .. month); -- translate the month name to this local language
date = mw.ustring.gsub (date, month, xlate); -- replace the English with the translation
date_parameters_list[param_name] = date; -- save the translated date
modified = true;
modified = true;
end
end
end
end


if xlt_dig then -- shall we also translate digits?
date = date:gsub ('%d', cfg.date_names.xlate_digits); -- translate digits from Western to 'local digits'
date_parameters_list[param_name].val = date; -- save the translated date
modified = true;
end
end
end
end
end
return modified;
return modified;
end
end




Line 858: Line 1,150:


local function set_selected_modules (cfg_table_ptr, utilities_page_ptr)
local function set_selected_modules (cfg_table_ptr, utilities_page_ptr)
is_set = utilities_page_ptr.is_set; -- import functions from selected Module:Citation/CS1/Utilities module
add_prop_cat = utilities_page_ptr.add_prop_cat ; -- import functions from selected Module:Citation/CS1/Utilities module
in_array = utilities_page_ptr.in_array; -- import functions from selected Module:Citation/CS1/Utilities module
is_set = utilities_page_ptr.is_set;
in_array = utilities_page_ptr.in_array;
set_message = utilities_page_ptr.set_message;
substitute = utilities_page_ptr.substitute;
wrap_style = utilities_page_ptr.wrap_style;
 
cfg = cfg_table_ptr; -- import tables from selected Module:Citation/CS1/Configuration
cfg = cfg_table_ptr; -- import tables from selected Module:Citation/CS1/Configuration
end
end




--[[--------------------------< A R C H I V E _ D A T E _ C H E C K >------------------------------------------
Compare value in |archive-date= with the timestamp in Wayback machine urls.  Emits an error message with suggested
date from the |archive-url= timestamp in an appropriate format when the value in |archive-date= does not match
the timestamp.
this function never called when any date in a cs1|2 template has errors
error message suggests new |archive-date= value in an appropriate format specified by <df>.  <df> is either
|df= or cfg.global_df in that order.  If <df> is nil, suggested date has format from |archive-date=.  There is
a caveat: when |df=dmy or |df=mdy, the reformatter leaves |access-date= and |archive-date= formats as they are.
The error message suggested date is passed to the formatter as YYYY-MM-DD so when |df=dmy or |df=mdy, the format
is not changed.
]]
local function archive_date_check (archive_date, archive_url_timestamp, df)
local archive_date_format = 'dmy-y'; -- holds the date format of date in |archive-date; default to ymd; 'dmy' used here to spoof reformat_dates()
for _, v_t in ipairs ({{'dMy', 'dmy-all'}, {'Mdy', 'mdy-all'}}) do -- is |archive-date= format dmy or mdy?
if archive_date:match (patterns[v_t[1]][1]) then -- does the pattern match?
archive_date_format = cfg.keywords_xlate[v_t[2]]; -- get appropriate |df= supported keyword from the i18n translator table
break;
end
end
local dates_t = {};
dates_t['archive-date'] = {val=archive_date, name=''}; -- setup to call reformat_dates(); never called when errors so <name> unset as not needed
reformat_dates (dates_t, 'dmy-y'); -- reformat |archive-date= to ymd; 'dmy' used here to spoof reformat_dates()
local archive_url_date = archive_url_timestamp:gsub ('(%d%d%d%d)(%d%d)(%d%d)%d*', '%1-%2-%3'); -- make ymd format date from timestamp
if dates_t['archive-date'].val == archive_url_date then -- are the two dates the same
return; -- yes, done
else
dates_t['archive-date'] = {val=archive_url_date, name=''}; -- setup to call reformat_dates() with the timestamp date
reformat_dates (dates_t, df or archive_date_format); -- reformat timestamp to format specified by <df> or format used in |archive-date=
archive_url_date = dates_t['archive-date'].val;
set_message ('err_archive_date_url_ts_mismatch', archive_url_date); -- emit an error message
end
end
--[[--------------------------< E X P O R T E D  F U N C T I O N S >------------------------------------------
]]


return { -- return exported functions
return { -- return exported functions
archive_date_check = archive_date_check,
date_hyphen_to_dash = date_hyphen_to_dash,
date_name_xlate = date_name_xlate,
dates = dates,
dates = dates,
reformat_dates = reformat_dates,
set_selected_modules = set_selected_modules,
year_date_check = year_date_check,
year_date_check = year_date_check,
reformat_dates = reformat_dates,
date_hyphen_to_dash = date_hyphen_to_dash,
date_name_xlate = date_name_xlate,
set_selected_modules = set_selected_modules
}
}
avs, delete
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